oj.uz

Submission #1070501

# Submission time Handle Problem Language Result Execution time Memory
1070501 2024-08-22T14:46:47 Z noyancanturk Rarest Insects (IOI22_insects) C++17
99.95 / 100
 44 ms 344 KB 
#include "insects.h"

#include<iostream>

int min_cardinality(int n) {
  int types[n]{},cert[n]{};
  bool arein[n]{};
  int last=0;
  auto push=[&](int i){
    move_inside(i);
    arein[i]=1;
  };
  auto pop=[&](int i){
    move_outside(i);
    arein[i]=0;
  };
  auto query=[&](){
    last=press_button();
  };
  types[0]=cert[0]=1;
  push(0);
  int headcnt=1;
  for(int i=1;i<n;i++){
    push(i);
    query();
    if(last!=1){
      types[i]=cert[i]=2;
      pop(i);
    }else headcnt+=types[i]=cert[i]=1;
  }
  last=1;
  int ans=1;
  int cnt=headcnt;
  int l=2,r=n/headcnt;
  int opcnt1=0,opcnt2=0;
  while(l<=r){
    int mid=l+r>>1;
    int past=last;
    for(int i=0;i<n;i++){
      if(mid<cert[i]&&arein[i]&&mid<last){
        pop(i),cnt--,past--;
        if(past<=mid)query(),past=last,opcnt1++;
      }
    }
    for(int i=0;i<n;i++){
      if(mid<types[i]&&arein[i]&&mid<last){
        pop(i),cnt--,past--;
        if(past<=mid)query(),past=last,opcnt1++;
      }
    }
    for(int i=0;i<n&&cnt<headcnt*mid;i++){
      if(arein[i]||mid<types[i])continue;
      int llast=last;
      push(i),cnt++;
      query();
      opcnt2++;
      if(llast!=last)cert[i]=std::max(cert[i],last);
      types[i]=std::max(types[i],last);
      if(mid<last)pop(i),cnt--,last--;
    }
    for(int i=0;i<n&&cnt<headcnt*mid;i++){
      if(arein[i]||mid<cert[i])continue;
      int llast=last;
      push(i),cnt++;
      query();
      opcnt2++;
      if(llast!=last)cert[i]=std::max(cert[i],last);
      types[i]=std::max(types[i],last);
      if(mid<last)pop(i),cnt--,last--;
    }
    if(cnt==headcnt*mid){
      ans=mid;
      l=mid+1;
    }else{
      r=cnt/headcnt;
    }
  }
  return ans;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:37:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |     int mid=l+r>>1;
      |             ~^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 2 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 2 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 2 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 10 ms 344 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 10 ms 344 KB Output is correct
26 Correct 16 ms 344 KB Output is correct
27 Correct 10 ms 344 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 11 ms 344 KB Output is correct
30 Correct 11 ms 344 KB Output is correct
31 Correct 10 ms 344 KB Output is correct
32 Correct 10 ms 344 KB Output is correct
33 Correct 9 ms 344 KB Output is correct
34 Correct 10 ms 344 KB Output is correct
35 Correct 11 ms 344 KB Output is correct
36 Correct 8 ms 344 KB Output is correct
37 Correct 8 ms 344 KB Output is correct
38 Correct 12 ms 344 KB Output is correct
39 Correct 11 ms 344 KB Output is correct
40 Correct 8 ms 344 KB Output is correct
41 Correct 5 ms 344 KB Output is correct

Subtask #3
74.95 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 17 ms 344 KB Output is correct
8 Correct 12 ms 340 KB Output is correct
9 Correct 23 ms 344 KB Output is correct
10 Correct 28 ms 344 KB Output is correct
11 Correct 14 ms 344 KB Output is correct
12 Correct 19 ms 344 KB Output is correct
13 Correct 30 ms 344 KB Output is correct
14 Correct 27 ms 344 KB Output is correct
15 Correct 15 ms 344 KB Output is correct
16 Correct 22 ms 344 KB Output is correct
17 Correct 17 ms 344 KB Output is correct
18 Correct 15 ms 344 KB Output is correct
19 Correct 17 ms 344 KB Output is correct
20 Correct 23 ms 344 KB Output is correct
21 Correct 30 ms 344 KB Output is correct
22 Correct 39 ms 344 KB Output is correct
23 Correct 31 ms 344 KB Output is correct
24 Correct 30 ms 344 KB Output is correct
25 Correct 14 ms 344 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 25 ms 344 KB Output is correct
28 Correct 24 ms 344 KB Output is correct
29 Correct 36 ms 344 KB Output is correct
30 Correct 25 ms 344 KB Output is correct
31 Correct 29 ms 344 KB Output is correct
32 Correct 33 ms 344 KB Output is correct
33 Correct 27 ms 344 KB Output is correct
34 Correct 43 ms 344 KB Output is correct
35 Partially correct 30 ms 344 KB Output is partially correct
36 Correct 44 ms 344 KB Output is correct
37 Correct 40 ms 344 KB Output is correct
38 Correct 20 ms 344 KB Output is correct
39 Correct 31 ms 344 KB Output is correct
40 Correct 14 ms 344 KB Output is correct
41 Correct 30 ms 344 KB Output is correct
42 Partially correct 25 ms 344 KB Output is partially correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 25 ms 344 KB Output is correct
45 Correct 20 ms 344 KB Output is correct
46 Correct 21 ms 344 KB Output is correct
47 Correct 17 ms 344 KB Output is correct
48 Correct 15 ms 344 KB Output is correct